The generic name of wheezing is also known as dihydroxypropyltheophylline injection, which belongs to the asthma medication. Dihydroxypropyl theophylline is mainly used for the treatment of wheezing symptoms caused by bronchial asthma, obstructive emphysema, wheezing bronchitis, and also has a certain therapeutic effect on asthma caused by cardiogenic pulmonary edema. The effect of dihydroxypropyl theophylline is similar to that of theophylline, and it has less effect on the heart and nervous system, which is more suitable for asthma patients with tachycardia, and it can play a direct relaxing effect on the smooth muscle of the respiratory tract, which can counteract the contracting effect of adenine and other contracting effects on the respiratory tract, and enhance the contracting force of diaphragm, and improve the respiratory function. Patients who are allergic to this product, active peptic ulcer and uncontrolled convulsive diseases are prohibited. Patients should consult a physician or professional pharmacist in advance when using this drug, and should not use it on their own.